Mack-Cali Realty Corporation Stockholders' Equity And Mack-Cali Realty, L.P.'s Partners' Capital (Earnings Per Share Tables - Diluted Computation Of EPS) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended |
Mar. 31, 2020 |
Mar. 31, 2019 |
| Stockolders Equity [Line Items] |
|
|
| Net income (loss) from continuing operations available to common shareholders |
$ (37,524)
|
$ 233,952
|
| Add (deduct): Noncontrolling interests in Operating Partnership |
(3,666)
|
26,843
|
| Add (deduct): Redemption value adjustment of redeemable noncontrolling interests in Operating Partnership unitholders |
(296)
|
(357)
|
| Income (loss) from continuing operations for diluted earnings per share |
(41,486)
|
260,438
|
| Income (loss) from discontinued operations for diluted earnings per share |
(5,753)
|
8,228
|
| Net income (loss) available for diluted earnings per share |
$ (47,239)
|
$ 268,666
|
| Weighted average common shares |
100,183
|
100,943
|
| Income (loss) from continuing operations available to common shareholders |
$ (0.41)
|
$ 2.58
|
| Income (loss) from discontinued operations available to common shareholders |
(0.06)
|
0.08
|
| Net income (loss) available to common shareholders |
$ (0.47)
|
$ 2.66
|
| Mack-Cali Realty LP [Member] |
|
|
| Stockolders Equity [Line Items] |
|
|
| Net income (loss) from continuing operations available to common shareholders |
$ (41,486)
|
$ 260,438
|
| Income (loss) from discontinued operations for diluted earnings per share |
(5,753)
|
8,228
|
| Net income (loss) available for diluted earnings per share |
$ (47,239)
|
$ 268,666
|
| Weighted average common unit |
100,183
|
100,943
|
| Income (loss) from continuing operations available to common shareholders |
$ (0.41)
|
$ 2.58
|
| Income (loss) from discontinued operations available to common shareholders |
(0.06)
|
0.08
|
| Net income (loss) available to common shareholders |
$ (0.47)
|
$ 2.66
|